*SET-U

English word origin

Etymology of twin

PIE word *dwóh₁ From Middle English twinne, twynne, from Old English ġetwin, ġetwinn (“twin, multiple”, noun) and twinn (“twin, two-fold, double, two by two”, adjective), from Proto-Germanic *twinaz (“double/two each, tw

2 source sectionsExtended source reportWiktionary original ↗
In this entry · 2 source sections

The source etymologies

Wiktionary via Kaikki / Wiktextract

The source reports below are imported and unreviewed by *SET-U. Separate numbered origins and differing source variants are preserved; agreement within this extraction is not independent corroboration.

Source etymology 1

Original entry ↗
verb

To separate, divide. · To split, part; to go away, depart. · To join, unite; to form links between (now especially of two places in different countries); to pair with. · To give birth to twins.

noun

Either of two people (or, less commonly, animals) who shared the same uterus at the same time; one who was born at the same birth as a sibling. · Either of two similar or closely related objects, plans, institutions, people, etc. · Either of two or more things, people, etc. that share a single feature. · A friendly term of address, typically for men.

Selected source glosses provide context, not a complete modern definition inventory

PIE word *dwóh₁ From Middle English twinne, twynne, from Old English ġetwin, ġetwinn (“twin, multiple”, noun) and twinn (“twin, two-fold, double, two by two”, adjective), from Proto-Germanic *twinaz (“double/two each, twin”), Proto-Germanic *twinjaz, *twīhnaz (“two each”), from Proto-Indo-European *dwino- (“twin”), from *dwóh₁ (“two”). Cognate with Scots twyn (“twin”), Dutch tweeling (“twin”), German Zwilling (“twin”), Danish, Norwegian Bokmål, Norwegian Nynorsk, and Swedish tvilling (“twin”), Faroese tvinnur (“a double set”), Icelandic tvenna (“duo, pair”), Lithuanian dvynys (“twin”), Russian двойня (dvojnja, “twin”).

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

This page abbreviates 7 auxiliary source items. The etymology narrative is not shortened. Omission counts are available in the audit fields below; consult the original for complete auxiliary material.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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    {
      "name": "dercat",
      "args": {
        "1": "en",
        "2": "ine-pro"
      },
      "expansion": ""
    },
    {
      "name": "langname",
      "args": {
        "1": "ine-pro"
      },
      "expansion": "Proto-Indo-European"
    },
    {
      "name": "word",
      "args": {
        "1": "en",
        "2": "ine",
        "3": "dwóh₁",
        "id": ""
      },
      "expansion": ""
    },
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      "name": "PIE word",
      "args": {
        "1": "en",
        "2": "dwóh₁"
      },
      "expansion": "PIE word\n *dwóh₁"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "twinne"
      },
      "expansion": "Middle English twinne"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "ġetwin"
      },
      "expansion": "Old English ġetwin"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*twinaz",
        "t": "double/two each, twin"
      },
      "expansion": "Proto-Germanic *twinaz (“double/two each, twin”)"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*twinjaz"
      },
      "expansion": "Proto-Germanic *twinjaz"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*dwino-",
        "4": "",
        "5": "twin"
      },
      "expansion": "Proto-Indo-European *dwino- (“twin”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "sco",
        "2": "twyn",
        "3": "",
        "4": "twin"
      },
      "expansion": "Scots twyn (“twin”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "tweeling",
        "3": "",
        "4": "twin"
      },
      "expansion": "Dutch tweeling (“twin”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Zwilling",
        "3": "",
        "4": "twin"
      },
      "expansion": "German Zwilling (“twin”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "da,nb,nn,sv",
        "2": "tvilling",
        "3": "",
        "4": "twin"
      },
      "expansion": "Danish, Norwegian Bokmål, Norwegian Nynorsk, and Swedish tvilling (“twin”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "fo",
        "2": "tvinnur",
        "3": "",
        "4": "a double set"
      },
      "expansion": "Faroese tvinnur (“a double set”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "is",
        "2": "tvenna",
        "3": "",
        "4": "duo, pair"
      },
      "expansion": "Icelandic tvenna (“duo, pair”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "lt",
        "2": "dvynys",
        "3": "",
        "4": "twin"
      },
      "expansion": "Lithuanian dvynys (“twin”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "ru",
        "2": "двойня",
        "3": "",
        "4": "twin"
      },
      "expansion": "Russian двойня (dvojnja, “twin”)"
    }
  ],
  "links": [
    [
      "*dwóh₁",
      "Reconstruction:Proto-Indo-European/dwóh₁"
    ],
    [
      "twinne",
      "twinne#Middle_English"
    ],
    [
      "twynne",
      "twynne#Middle_English"
    ],
    [
      "ġetwin",
      "getwin#Old_English"
    ],
    [
      "ġetwinn",
      "getwinn#Old_English"
    ],
    [
      "twinn",
      "twinn#Old_English"
    ],
    [
      "*twinaz",
      "Reconstruction:Proto-Germanic/twinaz"
    ],
    [
      "*twinjaz",
      "Reconstruction:Proto-Germanic/twinjaz"
    ],
    [
      "*twīhnaz",
      "Reconstruction:Proto-Germanic/twīhnaz"
    ],
    [
      "*dwino-",
      "Reconstruction:Proto-Indo-European/dwino-"
    ],
    [
      "*dwóh₁",
      "Reconstruction:Proto-Indo-European/dwóh₁"
    ],
    [
      "twyn",
      "twyn#Scots"
    ],
    [
      "tweeling",
      "tweeling#Dutch"
    ],
    [
      "Zwilling",
      "Zwilling#German"
    ],
    [
      "Danish",
      "tvilling#Danish"
    ],
    [
      "Norwegian Bokmål",
      "tvilling#Norwegian_Bokmål"
    ],
    [
      "Norwegian Nynorsk",
      "tvilling#Norwegian_Nynorsk"
    ],
    [
      "tvilling",
      "tvilling#Swedish"
    ],
    [
      "tvinnur",
      "tvinnur#Faroese"
    ],
    [
      "tvenna",
      "tvenna#Icelandic"
    ],
    [
      "dvynys",
      "dvynys#Lithuanian"
    ],
    [
      "двойня",
      "двойня#Russian"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "verb",
      "glosses": [
        "To separate, divide.",
        "To split, part; to go away, depart.",
        "To join, unite; to form links between (now especially of two places in different countries); to pair with.",
        "To give birth to twins."
      ],
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    {
      "pos": "noun",
      "glosses": [
        "Either of two people (or, less commonly, animals) who shared the same uterus at the same time; one who was born at the same birth as a sibling.",
        "Either of two similar or closely related objects, plans, institutions, people, etc.",
        "Either of two or more things, people, etc. that share a single feature.",
        "A friendly term of address, typically for men."
      ],
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}

Source etymology 2

Original entry ↗
adj

Double; dual; occurring as a matching pair. · Forming a pair of twins.

Selected source glosses provide context, not a complete modern definition inventory

From Middle English *twin, *twyn, from Old English twin, twinn (“twin; double”, adjective), from Proto-Germanic *twīhnaz (“occurring in a pair; twofold; double”), from Proto-Indo-European *dwóh₁ (“two”). Cognate with Icelandic tvennur (“double”), Gothic 𐍄𐍅𐌴𐌹𐌷𐌽𐌰𐌹 (tweihnai, “two each”).

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

{
  "templates": [
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "*twin"
      },
      "expansion": "Middle English *twin"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "twin"
      },
      "expansion": "Old English twin"
    },
    {
      "name": "inh",
      "args": {
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        "2": "gem-pro",
        "3": "*twīhnaz",
        "t": "occurring in a pair; twofold; double"
      },
      "expansion": "Proto-Germanic *twīhnaz (“occurring in a pair; twofold; double”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*dwóh₁",
        "t": "two"
      },
      "expansion": "Proto-Indo-European *dwóh₁ (“two”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "is",
        "2": "tvennur",
        "t": "double"
      },
      "expansion": "Icelandic tvennur (“double”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "got",
        "2": "𐍄𐍅𐌴𐌹𐌷𐌽𐌰𐌹",
        "t": "two each"
      },
      "expansion": "Gothic 𐍄𐍅𐌴𐌹𐌷𐌽𐌰𐌹 (tweihnai, “two each”)"
    }
  ],
  "links": [
    [
      "*twin",
      "Reconstruction:Middle English/twin"
    ],
    [
      "*twyn",
      "Reconstruction:Middle English/twyn"
    ],
    [
      "twin",
      "twin#Old_English"
    ],
    [
      "twinn",
      "twinn#Middle_English"
    ],
    [
      "*twīhnaz",
      "Reconstruction:Proto-Germanic/twīhnaz"
    ],
    [
      "*dwóh₁",
      "Reconstruction:Proto-Indo-European/dwóh₁"
    ],
    [
      "tvennur",
      "tvennur#Icelandic"
    ],
    [
      "𐍄𐍅𐌴𐌹𐌷𐌽𐌰𐌹",
      "𐍄𐍅𐌴𐌹𐌷𐌽𐌰𐌹#Gothic"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "adj",
      "glosses": [
        "Double; dual; occurring as a matching pair.",
        "Forming a pair of twins."
      ],
      "tags": [
        "not-comparable"
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}

Where this record stops

This page does not supply an independently verified sound-change sequence, first-use manuscript or complete family tree unless a cited analysis explicitly establishes one. Missing detail here is a limit of this record—not a claim that humanity knows nothing more.

An older meaning does not determine what a word must mean today. Follow the sources, preserve disagreements, and keep ancestry separate from interpretation.

Contribute located evidence for twin →

Source and snapshot

Imported from Wiktionary contributors; extracted by Tatu Ylonen / Wiktextract / Kaikki.org. Selected fields are reformatted and grouped; wording, source identity and etymology sections are retained. CC-BY-SA-4.0 applies to the imported source material.

Dump: 2026-10-01 · Extracted: 2026-10-30. These are snapshot dates, not the word’s first attestation or the page’s revision date.

Source entry and bibliography ↗Wiktionary revision history ↗Acquisition and rights ledger
Machine-source provenance
Source SHA-256
5ff2c072f8099f2d2ce484bd6957bf179f046d2ad37bc36555edf8bb84cb5291
Import run
73216b9a9b78ed3830994bf853103716f5a4dc57099e371e9f8fdc468facca26
Permanent entry ID
w-dHdpbg